Dental investment materials are used to encase the wax designed for the lost wax casting technique. These materials are usually available as a powder that is mixed with water and then used to encase the wax design. These materials solidify and can withstand the heat of the casting furnace to hold the precise shape left behind when the wax is burned out. Different gypsums are designed for use with different dental alloys or other materials, so be sure to select the proper gypsum for the case at hand.
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| Company | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation |
| Item | Ceramigold Investment with Carbon | Beauty-Cast Gypsum Investment | ResinVest | V.H.T. Refractory Investment | X-20 Chrome Phosphate Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | This phosphate investment contains carbon for bright, gold-colored castings. Expansion can be controlled to fit your needs -- yet technic is easy to | The proven standard for the Hygroscopic Technique. Also excellent for the High Heat Technique. | Designed for burning out printed or milled resin patterns for crowns, bridges, or frameworks, ResinVest is a fiber-reinforced material that resists | One of the most useful and efficient laboratory materials available today, V.H.T. is an extremely fine-grained phosphate investment with an ample | A vastly improved casting investment for making chrome partial denture frameworks. For casting any chrome partial alloy. Refractory Cast is hard, |
| Quantity | 144 - 90 g Package
144 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 144 - 75 g Package
144 - 50 g Package
24 - 50 g Package
11 kg (25 pounds) Carton | 100 g Package; 55 lbs. Carton | 24 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 22 kg (50 pounds) Carton
50 - 400 g Packages
25 kg (55 pounds) Carton
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle |
| Compressive Strength | Wet - 1,500 psi (10 MPa) | Wet - 700 psi (5 MPa) | 1,350 psi (9.2 MPa) | Wet - 2,500 psi (17 MPa)
Dry - 4,800 psi (34 MPa) | Wet - 2,500 psi (17 MPa) |
| Working Time | 6 - 7 minutes | 3 minutes | 6 to 8 Minutes | 4 - 5 minutes | 4 - 5 minutes |
| Set Time | Not Available | 14.5 minutes | 30 Minutes Minimum | Not Available | Not Available |
| Material Type | Phosphate Bonded Investment | Gypsum Casting Investment | Phosphate Investment | Refractory Die Material | Phosphate Bonded |
| Indication For Use | Crown and Bridge and Ceramic Gold Alloys | Low Fusing Crown and Bridge Alloys | Burning out milled or printed resin patterns | Direct Firing Ceramics | Casting Partials with Chromium Dental Alloys |
| Liquid / Powder Ratio | 16 mL /100 g | 30 mL/100 g | 22 ml/100 g | 19 mL / 100 g | 11 mL / 100 g |
| Setting Expansion | 0.7 % | 0.4 % | 1.6 Percent | 0.3 % | 0.2 % |
| Ready For Burnout | 60 minutes | 30 minutes | Yes | Not Available | 30 - 60 minutes |
| Hygroscopic Expansion | N / A | 1.5 % | Not Available | N / A | N / A |
| Thermal Expansion | 1.2 % | 480º C (900º F) - 0.55%
650º C (1,200º F) - 1.20% | 0.65 Percent | 500° C, 2nd Firing - 0.8 % | 700 -- 1,000° C (1,300 -- 1,800° F) - 0.90 % |
| Metal or Ringless Technique | Metal or Ringless | Metal Only | Both | N / A | Metal or Ringless |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |